This document comes after making some corrections - notably adding in the 2020s as a decade, and making some more changes for clarity.

Cod

Original cod data: same as before.


Transformed cod data: same as before.


Original cod data, colored and then split by decade: a VERY clear difference can be seen here, more-so than when the 2010s and 2020s were grouped.


Transformed data, colored and then split by decade: still harder to see the difference in the transformed plot, but this still shows a clearer difference over time than when the 2010s and 2020s are grouped.


Cod Model & Predictions Plot: intriguing that the 2020s are not statistically different here. The slope of the log model appears to be similar in the 1990s and 2020s, so I suppose it makes sense. The general trend of the data is the same, but after analyzing the above plots it is hard to conclude that no difference exists.

## 
## Call:
## lm(formula = log(INDWT) ~ log(LENGTH) * decade, data = cod)
## 
## Residuals:
##     Min      1Q  Median      3Q     Max 
## -4.6209 -0.0716  0.0003  0.0714  2.2543 
## 
## Coefficients:
##                           Estimate Std. Error  t value Pr(>|t|)    
## (Intercept)             -11.815967   0.011978 -986.502  < 2e-16 ***
## log(LENGTH)               3.075384   0.003091  994.893  < 2e-16 ***
## decade2000s              -0.130925   0.014431   -9.073  < 2e-16 ***
## decade2010s              -0.044426   0.016317   -2.723  0.00648 ** 
## decade2020s               0.025917   0.030663    0.845  0.39799    
## log(LENGTH):decade2000s   0.028911   0.003735    7.741 1.01e-14 ***
## log(LENGTH):decade2010s   0.007918   0.004233    1.870  0.06142 .  
## log(LENGTH):decade2020s  -0.003105   0.008088   -0.384  0.70105    
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 0.1333 on 41219 degrees of freedom
## Multiple R-squared:  0.9909, Adjusted R-squared:  0.9909 
## F-statistic: 6.427e+05 on 7 and 41219 DF,  p-value: < 2.2e-16


Visualizing just the slope of cod: 2000s really throws this off. Interesting pattern.


American Plaice

Original plaice data: same as before.


Transformed plaice data: same as before.


Original plaice data, colored and then split by decade: the relationship definitely appears to be decreasing, especially looking at the split plot.


Transformed plaice data, colored and then split by decade: same trend across all four decades, but the slope/trend appears similar.


American Plaice model & Predictions Plot: all terms are very significant, although I am still surprised to see the 2020s being the least significant based on the visualization of the data.

## 
## Call:
## lm(formula = log(INDWT) ~ log(LENGTH) * decade, data = plaice)
## 
## Residuals:
##     Min      1Q  Median      3Q     Max 
## -2.0075 -0.0841 -0.0046  0.0775  6.8670 
## 
## Coefficients:
##                           Estimate Std. Error   t value Pr(>|t|)    
## (Intercept)             -12.687838   0.012475 -1017.045  < 2e-16 ***
## log(LENGTH)               3.281383   0.003755   873.969  < 2e-16 ***
## decade2000s              -0.264616   0.016838   -15.715  < 2e-16 ***
## decade2010s              -0.090067   0.015509    -5.807 6.39e-09 ***
## decade2020s              -0.083047   0.026652    -3.116 0.001834 ** 
## log(LENGTH):decade2000s   0.060486   0.005102    11.856  < 2e-16 ***
## log(LENGTH):decade2010s   0.023268   0.004684     4.968 6.78e-07 ***
## log(LENGTH):decade2020s   0.029058   0.008059     3.606 0.000312 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 0.1382 on 42952 degrees of freedom
## Multiple R-squared:  0.9872, Adjusted R-squared:  0.9872 
## F-statistic: 4.751e+05 on 7 and 42952 DF,  p-value: < 2.2e-16


American Plaice slope (b) over time: again, the 2000s estimate is drastically different. Here, it appears the slope is actually increasing. Very interesting result after examining the plots above.


Atlantic Herring

Original Atlantic Herring data: I limited the individual weight at 0.75 kg (which may be too conservative - but it looked like every point above that was an outlier) to control for data errors. (No more 60 kg herring!)


Transformed Atlantic Herring data: same as before.


Original Atlantic Herring data, colored and then split by decade: the split plot helps examine these differences better. It does appear that the relationship is changing by decade.


Transformed Atlantic Herring data, colored and then split by decade: both plots illustrate a difference in the relationship between the 2020s and other decades.


Atlantic Herring Model & Predictions Plot: the plots show what appears to be a significant difference, yet the model says otherwise. I’m intrigued that the 2020s decade is not a significant factor in the model when the distribution appears to be so different. Even the 2010s are barely significant.

## 
## Call:
## lm(formula = log(INDWT) ~ log(LENGTH) * decade, data = herring)
## 
## Residuals:
##     Min      1Q  Median      3Q     Max 
## -2.5821 -0.0820  0.0066  0.0917  7.4844 
## 
## Coefficients:
##                           Estimate Std. Error  t value Pr(>|t|)    
## (Intercept)             -1.182e+01  1.547e-02 -763.851   <2e-16 ***
## log(LENGTH)              3.048e+00  4.906e-03  621.312   <2e-16 ***
## decade2000s             -1.764e-01  1.847e-02   -9.550   <2e-16 ***
## decade2010s              4.882e-02  2.005e-02    2.435   0.0149 *  
## decade2020s             -6.756e-02  7.001e-02   -0.965   0.3346    
## log(LENGTH):decade2000s  7.793e-02  5.869e-03   13.277   <2e-16 ***
## log(LENGTH):decade2010s -9.772e-04  6.419e-03   -0.152   0.8790    
## log(LENGTH):decade2020s  4.076e-02  2.203e-02    1.850   0.0643 .  
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 0.1445 on 102997 degrees of freedom
## Multiple R-squared:  0.9493, Adjusted R-squared:  0.9493 
## F-statistic: 2.757e+05 on 7 and 102997 DF,  p-value: < 2.2e-16


Atlantic herring slope over time: the slope appears to increase yet again. Like other species, it peaks in the 2000s.


Spiny Dogfish

Original spiny dogfish data: same as before.


Transformed spiny dogfish data: same as before.


Original spiny dogfish data, colored and then split by decade: it looks very different, especially in the 2020s.


Transformed spiny dogfish data, colored and then split by decade: the slopes do appear to be very similar.


Spiny dogfish Model & Predictions Plot: Finally! Results make sense!

## 
## Call:
## lm(formula = log(INDWT) ~ log(LENGTH) * decade, data = dogfish)
## 
## Residuals:
##     Min      1Q  Median      3Q     Max 
## -4.0777 -0.0921 -0.0037  0.0882  1.6834 
## 
## Coefficients:
##                           Estimate Std. Error   t value Pr(>|t|)    
## (Intercept)             -12.966530   0.012603 -1028.810   <2e-16 ***
## log(LENGTH)               3.124006   0.002998  1041.901   <2e-16 ***
## decade2000s              -0.231606   0.019279   -12.013   <2e-16 ***
## decade2010s               0.017300   0.021280     0.813    0.416    
## decade2020s               0.434289   0.041593    10.441   <2e-16 ***
## log(LENGTH):decade2000s   0.055430   0.004563    12.149   <2e-16 ***
## log(LENGTH):decade2010s  -0.005471   0.005111    -1.070    0.284    
## log(LENGTH):decade2020s  -0.112613   0.009994   -11.268   <2e-16 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 0.1354 on 63041 degrees of freedom
## Multiple R-squared:  0.9768, Adjusted R-squared:  0.9768 
## F-statistic: 3.786e+05 on 7 and 63041 DF,  p-value: < 2.2e-16


Spiny dogfish slope (b) through time: very significant decrease is shown - helpful for the hypothesis that equilibrium fish will be most impacted.


b Table and All-species figure

As we can see, there is great variability to what changes in b are occurring by species.

##                     1990s    2000s    2010s    2020s
## Cod              3.075384 3.104295 3.083302 3.072278
## American Plaice  3.281383 3.341870 3.304652 3.310441
## Atlantic Herring 3.048369 3.126295 3.047392 3.089132
## Spiny Dogfish    3.124006 3.179436 3.118535 3.011393


I got curious and did some extra analyses. I constructed a plot based on all the species from Kathy’s paper whose growth pattern changed such that they were larger at lower ages in the 2010s compared to 1970-2009, but eventually plateaued to a smaller size.

## Warning: Using an external vector in selections was deprecated in tidyselect 1.1.0.
## ℹ Please use `all_of()` or `any_of()` instead.
##   # Was:
##   data %>% select(decades)
## 
##   # Now:
##   data %>% select(all_of(decades))
## 
## See <https://tidyselect.r-lib.org/reference/faq-external-vector.html>.
## This warning is displayed once every 8 hours.
## Call `lifecycle::last_lifecycle_warnings()` to see where this warning was
## generated.


Looking only from the 1990s to 2020s:


We see that some have a decreasing relationship, some have an increasing relationship, and some stay about the same.

I also recalculated the parameters for all species in the survey: here’s the dataframe. Most had little data so the results aren’t very interesting, and I did not account for errors in measurement with any of these species yet (i.e. the 60 kg herring is included in this model, and I’m sure there are plenty more errors like it). I might try to clean this up a bit, maybe filter by sex/season like the Wigley paper did, but I think looking at the spatial distribution differences first would be most interesting.

##                                         1990s       2000s      2010s    2020s
## ATLANTIC.MACKEREL                    3.283855  3.33106031  3.3268026 3.309553
## SPINY.DOGFISH                        3.124006  3.17943560  3.1185347 3.011393
## ATLANTIC.HERRING                     3.048610  3.12629537  3.0353292 3.087207
## WINTER.SKATE                         3.293934  3.29828827  3.2032745 3.239688
## LITTLE.SKATE                         3.122496  3.13661569  3.0787447 3.166286
## YELLOWTAIL.FLOUNDER                  3.163118  3.11504977  3.0598302 3.102599
## WINTER.FLOUNDER                      3.090862  3.12102909  3.0657091 3.086570
## GOOSEFISH                            2.918134  2.94083895  2.9263218 2.929039
## ATLANTIC.COD                         3.075384  3.10429498  3.0833016 3.072278
## RED.HAKE                             3.065499  3.02602298  3.1448118 3.150626
## FOURSPOT.FLOUNDER                    3.189653  3.09985286  3.1955612 3.260386
## WINDOWPANE                           2.949491  2.96088411  3.0418203 3.115217
## LONGHORN.SCULPIN                     3.049577  3.04661745  3.0643988 3.074318
## OCEAN.POUT                           3.305108  3.33305323  3.2292302 3.240439
## SEA.RAVEN                            3.164890  3.18061505  3.1303513 3.132517
## SILVER.HAKE                          3.091245  3.07218276  3.1950228 3.186152
## SUMMER.FLOUNDER                      3.212481  3.22033530  3.2515863 3.231941
## CONGER.EEL                                 NA  3.61795168  3.1753913       NA
## WHITE.HAKE                           3.191919  3.23071141  3.1946986 3.187311
## WITCH.FLOUNDER                       3.237782  3.31573893  3.3033729 3.320195
## BUTTERFISH                           2.944683  2.92818659  3.1808411 3.238162
## NORTHERN.SEAROBIN                    3.473774  2.97749190  3.0930224 3.245510
## HADDOCK                              3.084966  3.10296536  3.0465607 3.076590
## SPOTTED.HAKE                         3.109046  3.11048826  3.1472664 3.084557
## AMERICAN.PLAICE                      3.281383  3.34186964  3.3046519 3.310441
## ATLANTIC.WOLFFISH                    2.959178  3.05273862  3.0609891 2.970797
## POLLOCK                              3.110185  3.09999957  3.0362894 3.082266
## ACADIAN.REDFISH                      3.199199  3.24042898  3.1718437 3.199839
## THORNY.SKATE                         3.097384  3.18397790  3.1293802 3.183423
## CUSK                                 3.178071  3.28601545  3.2076708 3.164554
## ATLANTIC.HALIBUT                     3.217904  3.22775200  3.2205579 3.186155
## BLUEFISH                             3.038712  3.09059627  3.0085838 3.160458
## SMOOTH.DOGFISH                       3.025976  3.07389594  3.1234550 3.126464
## WEAKFISH                             2.966162  2.88431864  3.0406686 3.059246
## BLACK.SEA.BASS                       3.030396  3.02977156  2.9638899 2.920127
## SMOOTH.SKATE                         3.110968  3.12581643  3.0697001 3.078911
## ATLANTIC.TORPEDO                     3.505302  3.20789991  2.9642978 2.936743
## SCUP                                 3.138201  3.16411762  3.1037893 3.131366
## CLEARNOSE.SKATE                      3.423513  3.32323282  3.2352800 3.287694
## SPANISH.MACKEREL                     2.934920  3.20069457         NA       NA
## ATLANTIC.BONITO                      3.543420          NA         NA       NA
## SOUTHERN.KINGFISH                    3.449309  1.67840462         NA       NA
## ATLANTIC.CROAKER                     3.092379  3.14964602  3.0931774 3.023519
## SPOT                                 3.208499  3.17147343  3.2248241 3.319154
## INSHORE.LIZARDFISH                         NA          NA         NA       NA
## NORTHERN.KINGFISH                    3.278500  3.20691127  3.1085396 2.741088
## OFFSHORE.LIZARDFISH                  4.140470          NA         NA       NA
## ROSETTE.SKATE                        3.002309  3.11019911  3.0981184 3.172099
## AMERICAN.SHAD                        3.222414  3.35610604  3.1961873 3.209589
## GULF.STREAM.FLOUNDER                       NA  2.88034511  3.0671938       NA
## ATLANTIC.SPADEFISH                   2.937982          NA         NA       NA
## VERMILION.SNAPPER                    3.010630  3.23303992         NA       NA
## STRIPED.BONITO                       2.326970          NA         NA       NA
## STRIPED.BASS                         3.048214  3.01672351  3.0424562 3.035492
## COBIA                                3.486817  3.77863845  3.4842028       NA
## KING.MACKEREL                        2.828970          NA         NA       NA
## GREATER.AMBERJACK                    2.722144  2.80991510         NA       NA
## ATLANTIC.SHARPNOSE.SHARK             3.010156  3.10060544  3.2623206 3.034857
## BUCKLER.DORY                         3.005461  2.87328868  2.8588892 2.888310
## BLACKBELLY.ROSEFISH                  3.051469  3.06948143  3.0978552 3.020806
## ALEWIFE                              3.199091  3.20757971  3.1751822       NA
## LONGFIN.SQUID                        2.130435  2.24959429  2.1647183 2.189130
## NORTHERN.SHORTFIN.SQUID              2.734768  2.78605743  2.6244779 2.726679
## BLUEBACK.HERRING                     3.361994  3.47706838  3.4495369 3.420902
## NORTHERN.SAND.LANCE                  2.851421          NA         NA       NA
## CUNNER                               3.081500  3.26248729  3.1959011       NA
## OFFSHORE.HAKE                        3.132338  3.10445697  3.0506848 3.070232
## RED.SNAPPER                                NA          NA         NA       NA
## CHAIN.DOGFISH                        3.139791  3.41340146         NA       NA
## BARNDOOR.SKATE                       3.286356  3.23197011  3.2838549 3.262893
## LING.UNCL                            1.370582  2.57241200         NA       NA
## GREENLAND.HALIBUT                    3.452309  3.19007220         NA       NA
## ATLANTIC.STURGEON                    3.454748  3.12081304  3.0673407 3.424869
## BLUNTNOSE.STINGRAY                   3.193317  3.19554329  2.9102065 3.310253
## BULLNOSE.RAY                         3.293345  3.22290283  3.0979414 3.158389
## SANDBAR.SHARK                        3.170576  3.29167175  3.1245147 2.632805
## SPINY.BUTTERFLY.RAY                  3.198987  3.11019203  3.1365739 2.985980
## ROUGHTAIL.STINGRAY                   3.028964  3.05472064  3.0608238 2.812824
## COWNOSE.RAY                          3.257297  3.14716827  3.1221014 3.222861
## SMOOTH.BUTTERFLY.RAY                 3.074180  3.03473593  3.0894835       NA
## DUSKY.FLOUNDER                       2.985261  3.49728232         NA       NA
## ATLANTIC.ANGEL.SHARK                 3.101384  3.00778852  2.9640969 2.961223
## BEARDFISH                                  NA  3.14729474         NA       NA
## LOGGERHEAD.SEATURTLE                 2.046367  2.86287718  2.9442068 0.709675
## SOUTHERN.STINGRAY                    3.142792  3.35646479  3.1920056 2.274674
## DUSKY.SHARK                          3.166228  3.05842584         NA       NA
## ROUND.HERRING                        2.964529          NA         NA       NA
## NIGHT.SHARK                          5.642450          NA         NA       NA
## NA.                                        NA          NA         NA       NA
## MACKEREL.SCAD                        3.327953  4.63573517         NA       NA
## SAND.TIGER                           3.292664  3.24428772  3.3162804 3.303358
## ATLANTIC.THREAD.HERRING              3.724175          NA         NA       NA
## SPANISH.SARDINE                      3.146337          NA         NA       NA
## TILEFISH                             3.161095  3.10659281  3.0844505 3.076432
## SPOTFIN.DRAGONET                     3.442035  1.13740053         NA       NA
## LONGFIN.HAKE                               NA  3.35251285         NA       NA
## FAWN.CUSK.EEL                        3.235921  3.00454469  2.8572348       NA
## FOURBEARD.ROCKLING                   3.941901  3.29979226  3.2112953       NA
## RED.DRUM                             3.341661  3.27973866         NA       NA
## SHARK.UNCL                          -1.527124  7.80168719         NA       NA
## TAUTOG                               3.044322  3.12354287  2.8078328 3.102022
## AMERICAN.LOBSTER                           NA  3.01170146  2.9832043 2.949543
## HICKORY.SHAD                               NA  2.98529533         NA       NA
## LANTERNFISH.UNCL                           NA  1.37458001         NA       NA
## JONAH.CRAB                                 NA  2.96606894  2.6431030       NA
## SNAKEBLENNY                                NA  4.07149347         NA       NA
## RED.DEEPSEA.CRAB                           NA  3.01689607         NA       NA
## BARRACUDINA.UNCL                           NA  3.91474837         NA       NA
## ATLANTIC.ARGENTINE                         NA  3.49401982         NA       NA
## GRENADIER.UNCL                             NA  3.00627546         NA       NA
## ATLANTIC.ROCK.CRAB                         NA  2.94917455         NA       NA
## SHORTHORN.SCULPIN                          NA          NA         NA       NA
## ALLIGATORFISH                              NA  2.00471488         NA       NA
## UNKNOWN.01                                 NA  2.53534591  1.2428405       NA
## WHITE.BARRACUDINA                          NA          NA         NA       NA
## NORTHERN.STONE.CRAB                        NA  1.97576748         NA       NA
## SNOW.CRAB                                  NA  1.59843871         NA       NA
## RUPPELL.S.ABRALIA                          NA          NA         NA       NA
## ATLANTIC.MENHADEN                          NA  3.14707587  3.0108285 2.589626
## STRIPED.SEAROBIN                           NA  3.03920288  3.0512448 3.082893
## WAVED.WHELK                                NA  2.74167864         NA       NA
## NORTHERN.HORSEMUSSEL                       NA  2.34770943         NA       NA
## VIPERFISH                                  NA  3.50585070         NA       NA
## WRYMOUTH                                   NA          NA         NA       NA
## GRUBBY                                     NA  2.60687956         NA       NA
## ATLANTIC.SAURY                             NA          NA         NA       NA
## BLACKFIN.GOOSEFISH                         NA  3.02541428  3.3989936       NA
## DEEPBODY.BOARFISH                          NA  2.72280525         NA       NA
## CUSK.EEL.UNCL                              NA  3.09755217         NA       NA
## HORSESHOE.CRAB                             NA  4.26070759         NA       NA
## CONGER.EEL.UNCL                            NA  3.28931074  3.5025086       NA
## ROUGHBACK.BATFISH                          NA          NA         NA       NA
## SAND.PERCH                                 NA          NA         NA       NA
## TOMTATE                                    NA          NA         NA       NA
## MORAY.UNCL                                 NA          NA         NA       NA
## SEA.SCALLOP                                NA  3.35337681  3.1910082 2.982643
## SEA.LAMPREY                                NA          NA         NA       NA
## UNKNOWN.02                                 NA  2.42889517         NA       NA
## SCORPIONFISH.AND.ROCKFISH.UNCL             NA  3.04372687  2.2104669       NA
## GRAY.TRIGGERFISH                           NA  2.80777332         NA       NA
## WARSAW.GROUPER                             NA  2.43668701         NA       NA
## COARSEHAND.LADY.CRAB                       NA  4.00749452         NA       NA
## LADY.CRAB                                  NA  2.87557934         NA       NA
## BLUELINE.TILEFISH                          NA  3.19645495         NA       NA
## SINGLESPOT.FROGFISH                        NA          NA         NA       NA
## BLACKMOUTH.BASS                            NA          NA         NA       NA
## MOUSTACHE.SCULPIN                          NA          NA  2.9195123       NA
## ATLANTIC.HAGFISH                           NA  2.74034439         NA       NA
## WEITZMANS.PEARLSIDES                       NA -2.85133801         NA       NA
## ARMORED.SEAROBIN                           NA  2.95142875         NA       NA
## SNAKE.MACKEREL.UNCL                        NA  0.44559858         NA       NA
## SPIDER.CRAB.UNCL                           NA  1.37595689         NA       NA
## SMALLMOUTH.FLOUNDER                        NA  3.04228250  3.1210169       NA
## FLOUNDER.UNCL                              NA          NA         NA       NA
## SKATE.UNCL                                 NA  3.48427612         NA       NA
## DEEPWATER.FLOUNDER                         NA  0.03081747         NA       NA
## SHORTNOSE.GREENEYE                         NA  2.19241680         NA       NA
## STREAMER.BASS                              NA          NA         NA       NA
## BANDED.RUDDERFISH                          NA  2.52767786         NA       NA
## BLUE.RUNNER                                NA          NA         NA       NA
## ATLANTIC.BATFISH                           NA  3.76937598         NA       NA
## TONGUEFISH.UNCL                            NA  3.70827296         NA       NA
## HATCHETFISH.UNCL                           NA  2.24017032         NA       NA
## SNAKE.EEL.UNCL                             NA  3.75777648         NA       NA
## ROCK.GUNNEL                                NA          NA         NA       NA
## STRIATED.ARGENTINE                         NA  3.26198301         NA       NA
## MARLIN.SPIKE                               NA          NA         NA       NA
## EELPOUT.UNCL                               NA          NA         NA       NA
## KEELCHEEK.BASS                             NA  2.35103894         NA       NA
## SLENDER.SNIPE.EEL                          NA  1.53260556         NA       NA
## MORA.UNCL                                  NA  2.62426305         NA       NA
## WOLF.EELPOUT                               NA          NA         NA       NA
## SIMONYS.FROSTFISH                          NA  0.07976012         NA       NA
## SILVER.RAG                                 NA          NA         NA       NA
## LONGSPINE.SNIPEFISH                        NA          NA         NA       NA
## YELLOWFIN.BASS                             NA  2.87874931         NA       NA
## RED.BARBIER                                NA  2.69496458         NA       NA
## THRESHER.SHARK                             NA  1.46734145  0.7757240       NA
## BLUESPOTTED.CORNETFISH                     NA          NA         NA       NA
## SHEEPSHEAD                                 NA  3.42756789         NA       NA
## NORTHERN.STARGAZER                         NA          NA         NA       NA
## ROUGH.SCAD                                 NA  3.24622182         NA       NA
## CHUB.MACKEREL                              NA  3.72564042         NA       NA
## ROUND.SCAD                                 NA  3.70675614         NA       NA
## SILVER.SEATROUT                            NA  3.90356221         NA       NA
## DWARF.SAND.PERCH                           NA          NA         NA       NA
## BIGEYE                                     NA  3.24844830         NA       NA
## FLYING.GURNARD                             NA          NA         NA       NA
## RED.GOATFISH                               NA          NA         NA       NA
## SAND.DIVER                                 NA          NA         NA       NA
## ATLANTIC.MIDSHIPMAN                        NA          NA         NA       NA
## TATTLER                                    NA  1.78151761         NA       NA
## SHORT.BIGEYE                               NA  0.73088857         NA       NA
## CUBBYU                                     NA  3.01584286         NA       NA
## BROAD.FLOUNDER                             NA          NA         NA       NA
## UNCLASSIFIED.FISH                          NA  1.64657699         NA       NA
## BANK.SEA.BASS                              NA          NA         NA       NA
## BEARDLESS.CODLING                          NA          NA         NA       NA
## RED.DORY                                   NA          NA         NA       NA
## MARGINED.SNAKE.EEL                         NA          NA         NA       NA
## LONGNOSE.GREENEYE                          NA  3.60562661         NA       NA
## GOBY.UNCL                                  NA          NA         NA       NA
## SWIMMING.CRAB.UNCL                         NA  4.91373456         NA       NA
## TWOSPOT.FLOUNDER                           NA          NA         NA       NA
## REMORA                                     NA          NA         NA       NA
## NORTHERN.PUFFER                            NA  2.82287725         NA       NA
## ALMACO.JACK                                NA          NA  2.4446699       NA
## RIGHTEYE.FLOUNDER.UNCL                     NA  3.80178402         NA       NA
## LUMPFISH                                   NA  3.25844334         NA       NA
## BLUE.CRAB                                  NA  0.91437873         NA       NA
## BLACK.DRUM                                 NA  2.76084054         NA       NA
## STRIPED.BURRFISH                           NA          NA         NA       NA
## PINFISH                                    NA  2.93009445         NA       NA
## SNAKEFISH                                  NA  2.85928493         NA       NA
## RED.CORNETFISH                             NA          NA         NA       NA
## FRECKLED.STARGAZER                         NA          NA         NA       NA
## STRIPED.CUSK.EEL                           NA  3.24334015         NA       NA
## SOUTHERN.EAGLE.RAY                         NA  2.36975908         NA       NA
## RAY.AND.SKATE.UNCL                         NA          NA         NA       NA
## BOX.CRAB.UNCL                              NA          NA         NA       NA
## BOBTAIL.UNCL                               NA  2.23684037  3.2543581       NA
## ETROPUS.UNCL                               NA          NA         NA       NA
## ATLANTIC.SURFCLAM                          NA  3.02356139  2.9715012 2.999996
## OCEAN.QUAHOG                               NA  3.07392299  2.8925135 3.078578
## SPOTTED.TINSELFISH                         NA          NA         NA       NA
## HOOKEAR.SCULPIN.UNCL                       NA          NA         NA       NA
## ATLANTIC.CUTLASSFISH                       NA          NA  3.2784762       NA
## SPINY.SEAROBIN                             NA  2.51818061         NA       NA
## STRIPED.ANCHOVY                            NA          NA         NA       NA
## SHORTFIN.MAKO                              NA          NA         NA       NA
## REDEYE.GAPER                               NA          NA         NA       NA
## SEA.SCALLOP.CLAPPER                        NA  2.73346703         NA       NA
## SPOONARM.OCTOPUS                           NA  2.36895347         NA       NA
## SEA.BASS.UNCL                              NA  2.72573961         NA       NA
## OCTOPUS.UNCL                               NA          NA         NA       NA
## CANCER.CRAB.UNCL                           NA          NA         NA       NA
## GLADIATOR.BOX.CRAB                         NA          NA         NA       NA
## PUFFER.UNCL                                NA          NA         NA       NA
## LONGSPINE.SCORPIONFISH                     NA  4.77048161         NA       NA
## ROCK.SEA.BASS                              NA          NA         NA       NA
## PLANEHEAD.FILEFISH                         NA          NA         NA       NA
## BLACKTIP.SHARK                             NA          NA         NA       NA
## BANDED.DRUM                                NA          NA         NA       NA
## BLACKNOSE.SHARK                            NA -1.06185993  3.1005640       NA
## PALESPOTTED.EEL                            NA  3.31642314         NA       NA
## RIDGED.SLIPPER.LOBSTER                     NA          NA         NA       NA
## WHIFF.UNCL                                 NA          NA         NA       NA
## SOUTHERN.QUAHOG                            NA  3.09721342         NA       NA
## AMERICAN.EEL                               NA          NA         NA       NA
## SCALLOPED.HAMMERHEAD.SHARK                 NA  2.79049502         NA       NA
## OCEAN.SUNFISH                              NA          NA         NA       NA
## SILKY.SHARK                                NA          NA  3.1468042       NA
## LEATHERBACK.SEATURTLE                      NA          NA         NA       NA
## SPOON.NOSE.EEL.UNCL                        NA          NA         NA       NA
## PORTUGUESE.SHARK                           NA  2.17897758         NA       NA
## PIPEFISH.SEAHORSE.UNCL                     NA          NA  0.2411193       NA
## BLOTCHED.CUSK.EEL                          NA          NA         NA       NA
## SQUID..CUTTLEFISH..AND.OCTOPOD.UNCL        NA          NA         NA       NA
## ATLANTIC.SEASNAIL                          NA          NA         NA       NA
## WENCHMAN                                   NA          NA         NA       NA
## BULLEYE                                    NA          NA  2.8846737       NA
## LIZARDFISH.UNCL                            NA          NA         NA       NA
## SNAKE.MACKEREL                             NA          NA         NA       NA
## TARPON                                     NA          NA         NA       NA
## COTTONMOUTH.JACK                           NA          NA         NA       NA
## SPOTTED.SPOON.NOSE.EEL                     NA          NA         NA       NA
## ATLANTIC.SURFCLAM.CLAPPER                  NA          NA  4.7933418       NA
## BASKING.SHARK                              NA          NA  2.1540358       NA
## SPINNER.SHARK                              NA          NA  2.9914743       NA
## TIGER.SHARK                                NA          NA  4.2898589       NA
## GREAT.HAMMERHEAD.SHARK                     NA          NA -0.2990242       NA
## BIGEYE.THRESHER.SHARK                      NA          NA         NA       NA
## SCULPIN.UNCL                               NA          NA         NA       NA
## PORBEAGLE.SHARK                            NA          NA         NA       NA
## GRAY.SEAL                                  NA          NA         NA       NA
## SMOOTH.HAMMERHEAD.SHARK                    NA          NA         NA       NA
## KEMP.S.RIDLEY.SEATURTLE                    NA          NA         NA       NA
## HARBOR.PORPOISE                            NA          NA         NA       NA